Hospitaller Orders were religious organizations established during the Middle Ages, primarily to provide care for the sick and injured. They originated from the Knights Hospitaller, founded in the 11th century in Jerusalem to assist pilgrims. Over time, these orders evolved into military and charitable institutions, combining healthcare with defense of the Holy Land. These orders played a significant role in the Crusades, offering medical assistance and protection to travelers. They established hospitals and fortifications across Europe and the Mediterranean, contributing to the development of healthcare practices. Today, some Hospitaller Orders continue their mission of charity and healthcare worldwide.